/*-
* Copyright (c) 2003-2004 Tim Kientzle
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "archive_platform.h"
__FBSDID("$FreeBSD$");
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "archive.h"
#include "archive_private.h"
struct write_file_data {
int fd;
char filename[1];
};
static int file_close(struct archive *, void *);
static int file_open(struct archive *, void *);
static ssize_t file_write(struct archive *, void *, void *buff, size_t);
int
archive_write_open_file(struct archive *a, const char *filename)
{
struct write_file_data *mine;
if (filename == NULL) {
mine = malloc(sizeof(*mine));
if (mine == NULL) {
archive_set_error(a, ENOMEM, "No memory");
return (ARCHIVE_FATAL);
}
mine->filename[0] = 0;
} else {
mine = malloc(sizeof(*mine) + strlen(filename));
if (mine == NULL) {
archive_set_error(a, ENOMEM, "No memory");
return (ARCHIVE_FATAL);
}
strcpy(mine->filename, filename);
}
mine->fd = -1;
return (archive_write_open(a, mine,
file_open, file_write, file_close));
}
static int
file_open(struct archive *a, void *client_data)
{
int flags;
struct write_file_data *mine;
struct stat st, *pst;
pst = NULL;
mine = client_data;
flags = O_WRONLY | O_CREAT | O_TRUNC;
if (*mine->filename != 0) {
mine->fd = open(mine->filename, flags, 0666);
/*
* If client hasn't explicitly set the last block
* handling, then set it here: If the output is a
* block or character device, pad the last block,
* otherwise leave it unpadded.
*/
if (mine->fd >= 0 && a->bytes_in_last_block < 0) {
if (fstat(mine->fd, &st) == 0) {
pst = &st;
if (S_ISCHR(st.st_mode) ||
S_ISBLK(st.st_mode) ||
S_ISFIFO(st.st_mode))
/* Pad last block. */
archive_write_set_bytes_in_last_block(a, 0);
else
/* Don't pad last block. */
archive_write_set_bytes_in_last_block(a, 1);
}
}
} else {
mine->fd = 1;
if (a->bytes_in_last_block < 0) /* Still default? */
/* Last block will be fully padded. */
archive_write_set_bytes_in_last_block(a, 0);
}
if (mine->fd < 0) {
archive_set_error(a, errno, "Failed to open '%s'",
mine->filename);
return (ARCHIVE_FATAL);
}
if (pst == NULL && fstat(mine->fd, &st) == 0)
pst = &st;
if (pst == NULL) {
archive_set_error(a, errno, "Couldn't stat '%s'",
mine->filename);
return (ARCHIVE_FATAL);
}
a->skip_file_dev = pst->st_dev;
a->skip_file_ino = pst->st_ino;
return (ARCHIVE_OK);
}
static ssize_t
file_write(struct archive *a, void *client_data, void *buff, size_t length)
{
struct write_file_data *mine;
(void)a; /* UNUSED */
mine = client_data;
return (write(mine->fd, buff, length));
}
static int
file_close(struct archive *a, void *client_data)
{
struct write_file_data *mine = client_data;
(void)a; /* UNUSED */
if (mine->fd >= 0)
close(mine->fd);
free(mine);
return (ARCHIVE_OK);
}
